Ferdinand f



(No Mode'l.)

P. F. UNGKRIGH.v

NUT LOCK- fittest. 3' Imre-nto?,

j TQAAGMWMQXK\I\ l UNITED STATESv PATENT OgEEIcE.

FERDINAND F. UNOKRICI-I, OF SANDUSKY, OHIO, ASSIGNOR TO VAIJFER Il. STONE, OF SAME PLACE.

NUT-LOCK.

\ SPECIFICATION forming part of Letters Patent No. 453,222, dated J une 2, 1'891.

Application fled March 3l, 1888, Serial No. 269,155. (No model.)

T all whom t may concern: against movement in the opposite direction. Be it known that LFERDINAND F. UNOK- The stem a of the plunger extends upward in RICH, a citizen of the United States, residing a smaller perforation through the nut. at Sandusky, 'Erie county, Ohio, have in- As a guide to insure the proper relation of 55 5 vented new and useful Improvements in Nutthe beveled face of the catch to the recesses Locks, of which the following is a specificaof the washer, the upward projection of the tOIl. stem a is bent over laterally, and when the VMy invention relates to nut-locks, its obcatch is in its lowest or engaging position ject being to produce a cheap, practicable, seats ina correspondingly elongated depres- 6o 1o and efficient holding device to prevent loossion c in the upper face of the nut. As the ening of the nut; to'which end it consistsI in bent stem a can enter the depression only in the combination, with the nut a-nd a holdingone position, it forms a guide for the engagwasher, of a catch ot' peculiar construction, ing bevel-face of the catch, which can thus adapted when in place to lie wholly within the present its bevel-face to the washer only in 65 l exposed faces of the nut, so constructed and proper relation to the holding depressions. arranged as to insure its perfect automatic The bent stem tt also possesses another funcholding action and at the same time permit tion of great convenience, to wit: W'hen it is its ready disengagement when desired, all as desired to release the nut, the plunger is more fully hereinafter set forth. lifted by inserting the edge of any sharp in- 7o zo My invention is illustrated in the accom.- strument beneath the bent stem c and the panying drawings, in which` plunger lifted within the counterbored aper- Figure l is a general side view of the nut ture of the nut against the resiliency of its and washer,sectioned in parts to show details spring s. At the limit of its upward lift the of construction; Fig. 2, a general plan view of bent stern ct is turned around, over, and is 75 same; Fig. 3', a general side view of a railheld upon the face of the nut out of its dejoint and fish-plate, showing the application pression c', thus retaining the catch elevated of the washer thereto; Fig. 4, a detached view and out of engagement. of the plungeror catch; and Fig. 5,adetached It will be seen that when the catch ct is sectional View of the nut, showing the conseated and engaged with the washer its bent 8o i 3o struction of the plunger-aperture and the surstem is wholly within the depression c', and face guide-recess for the head of the plungerthus no part is left projecting, but all is constem. tained within the exposed faces of the nut Referring now to the drawings in aid of the and cannot be injured in any way, nor interdescription, A designates the nut, and B a fere with the use of the wrench. The catch 85 holding-washer. The washeris provided with being in proper position for action it rides radial grooves or recesses Z) or their equivaover the ratchet-face of the washer as the nut lent, and with a tongue or tongues to embed is turned and automatically seats itself to in wood', or other means of preventing rotaprevent backward rotation of the nut.

tion, according to the circumstances of use, It will be obvious thatinstead of a ratch--go 4o such as a straight edge at one side to bear et-face7 the washer may be provided with a against a flange-or abutment upon the fshconcentric series of pits or holes to receive plate, used in rail-joints, as in Fig. 3. the end of the plunger, and that the latter The holding-catch ct is a plunger seated in need not be beveled. In such oase the guid a counterbored aperturecin the nut and held ing function of the bent stem will not be re- 95 outward by a spring s, coiled about the stem alized, but its convenience in the other reof the plunger within the counterbore of the spects enumerated will not be impaired. nut. The lower face of the catch ct is bev- I claim as my invention and desire to seeled to ride freelyover the ridges between the cure byLetters Patent of the United States.- radial grooves of the washer (as permitted by The improved self-locking nut-lock emroo 5o the compression of the spring s) in onedirecbodyinga ratchet-faced holding-washer, a nut tion,- but present a vertical resisting face provided with a counterbored perforation adl jacent to its ho1t-aperture, said perforation its opposite movement, substantially as Set extended by a lateral recess in the outer face forth. of the nut, and a springimpeiiedbevel-faced In testimony whereof I have hereunto Set plunger-catch seated in said perforation, hav my hand in the presence of two subscribing 5 inflg stem extended laterally in said recess, Witnesses.

w o y within the outer face of the nut, said 1 T w recess serving also as a guide to preserve the l FERDINAND F' UNCKRHJH' engaging face of the plunger-catch in proper Witnesses: relation with the bevel-faces of the Washer to MARY MILLER,

1o permit the nut to he tightened, but prevent ROSA BAUBACH. 

